Tractor tire gauge offers a pressure range of 5-50 PSI or 40-350 kPa. Tire gauges provide accurate, long life with trouble free performance. Made of durable plated brass with 4 side nylon indicator bar. Designed for use on air/water filled tractor tires. Always check tire pressure when tires are cold. Product Features:Made using machined parts unlike the competitionPressure range of 5-50 pounds per square inch or 40-350 kilopascalIncludes deflator valve